2K2J

NMR solution structure of the split PH domain from Phospholipase C gamma 2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 structures for lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Rac Regulates Its Effector Phospholipase C{gamma}2 through Interaction with a Split Pleckstrin Homology Domain.

Walliser, C.Retlich, M.Harris, R.Everett, K.L.Josephs, M.B.Vatter, P.Esposito, D.Driscoll, P.C.Katan, M.Gierschik, P.Bunney, T.D.

(2008) J.Biol.Chem. 283: 30351-30362

  • DOI: 10.1074/jbc.M803316200

  • PubMed Abstract: 
  • Several isoforms of phospholipase C (PLC) are regulated through interactions with Ras superfamily GTPases, including Rac proteins. Interestingly, of two closely related PLCgamma isoforms, only PLCgamma(2) has previously been shown to be activated by ...

    Several isoforms of phospholipase C (PLC) are regulated through interactions with Ras superfamily GTPases, including Rac proteins. Interestingly, of two closely related PLCgamma isoforms, only PLCgamma(2) has previously been shown to be activated by Rac. Here, we explore the molecular basis of this interaction as well as the structural properties of PLCgamma(2) required for activation. Based on reconstitution experiments with isolated PLCgamma variants and Rac2, we show that an unusual pleckstrin homology (PH) domain, designated as the split PH domain (spPH), is both necessary and sufficient to effect activation of PLCgamma(2) by Rac2. We also demonstrate that Rac2 directly binds to PLCgamma(2) as well as to the isolated spPH of this isoform. Furthermore, through the use of NMR spectroscopy and mutational analysis, we determine the structure of spPH, define the structural features of spPH required for Rac interaction, and identify critical amino acid residues at the interaction interface. We further discuss parallels and differences between PLCgamma(1) and PLCgamma(2) and the implications of our findings for their respective signaling roles.


    Organizational Affiliation

    Institute of Pharmacology and Toxicology, University of Ulm Medical Center, 89070 Ulm, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase gamma-2
A
124Homo sapiensGene Names: PLCG2
EC: 3.1.4.11
Find proteins for P16885 (Homo sapiens)
Go to Gene View: PLCG2
Go to UniProtKB:  P16885
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 structures for lowest energy 
  • Olderado: 2K2J Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance